An idll file extension is related to the CodeWarrior, a development tool. An idll file contains dynamic link library.
Software that open idll file
IDLL file extension - CodeWarrior dynamic link library
What is idll file? How to open idll files?
File type specification:
The idll file extension is assoicated with the CodeWarrior integrated development environment (IDE) that allows programmers to create embedded applications.
The idll file stores various data used for internal purposes of the CodeWarrior.
The default software associated to open idll file:
CodeWarrior Development Studio 
Company or developer:
Freescale Semiconductor, Inc.
CodeWarrior Development Studio is integrated development environment for programming languages, such as C, C++, Assembly language, Pascal, Object Pascal, Objective-C, and Java.
List of recommended software applications associated to the .idll file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open idll file, edit idll file, convert idll file, view idll file, play idll file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with idll file - CodeWarrior dynamic link library
Click on the software link for more information about CodeWarrior Development Studio. CodeWarrior Development Studio uses idll file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
